Coin detecting device for slot machines



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Patented May 24, 1938 UNITED STATES OG'CIFUH PATENT OFFICE COIN DETECTING DEVICE FOR SLOT MACHINES Theodore Bibicos, Cleveland, Ohio Application February 4, 1937, Serial No. 123,976

2 Claims.

This invention pertains to coin-detecting devices, and has particular referenwto slot-machines to prevent the use of slugs or other substitutes for coins to operate the machine. This invention is in some respects an improvement on the machine shown in my Patent No. 2,085,626.

The device is particularly adapted for use on machines in telephone pay stations.

The object of the invention is to provide an improved coin-measuring and weighing device which automatically separates, deflects and ejects slugs,

spurious coins and the like.

In the accompanying drawings:

Fig. 1 is a front elevation of the device partly in section and with the cover removed.

Fig. 2 is a section partly in elevation on line 2-2 of Fig. 1.

Fig. 3 is a section partly in elevation on line 33 of Fig. 1.

Fig. 4 is a fragmentary section on line 4-4 of Fig. 1.

Fig. 5 is an elevation of a fragmentary portion of the device as indicated by line 55 of Fig. 1.

Fig. 6 is a similar elevation on line 6-6 of Fig. 1.

Fig. 7 is a perspective view of Fig. 1 except that the upper gates are shown in the open position.

Figs. 8 and 9 are diagrammatic perspectives illustrating the closed and open positions of the upper gates, respectively.

Figs. 10 and 11 are perspectives of the lower gates, in difierent positions respectively.

Referring again to the illustrations; a base plate or wall I0 has mounted thereon an upper coin guide II, with a coin receiving slot I2 at its top edge and a substantially rectangular opening or orifice I3 near the top thereof and angularly disposed in the side wall thereof.

A boss Illa on the wall I0 is so disposed on the 7 wall it as to form a buffer for small slugs as they pass the orifice I3.

The coin guide II is slotted to form a passageway I4 as indicated by the dotted lines in Fig. l; and a curved projection I5 extends downwardly beside the aperture IS in the lower edge of said coin guide.

A spring I7 is secured to the inner wall of the passageway I4 adjacent to the aperture I6 in the coin guide II, said coin guide being secured to the wall I0 by bolts I8.

A small pivoting gate I9 is mounted on the wall Illand disposed to the left and near the top of the part I5 while a larger pivoting gate is mounted to the right of and slightly below the projection I5 on pivot pins 2I and 22 respectively.

A pair of stops 23 and 24 are mounted on the wall ID in such position as to limit the opening of gates I9 and 20 respectively.

An adjustable weight 25 is pivotally secured to the gate 20 at its outer end, by a pivot 26; a flanged portion 20a of the gate 20 limits the pivotal movement or swing of the weight 25, said Weight always moving to a perpendicular position regardless of the position of the gate 20.

A lower coin guide 21, is mounted on the wall I0 below the gates I9 and 20, a slotted aperture 28 in the coin guide 21 being disposed below the gates I9 and 20 in such position as to receive the coins as they fall through the open gates.

The passageway 29 in the guide 21 is indicated by the dotted lines shown in Fig. 1 and terminates in an aperture 30 beneath a curved projection 3|, said guide being secured to the wall In by bolts I8a.

A spring 21a is secured to the inner wall of the passageway 29 to the left and adjacent the aperture 30.

A second pair of pivoting gates 32 and 33 are mounted on the wall I0 below and adjacent to the projection 3|, the smaller gate 32 being mounted on a pivot pin 34 to the right of the projection while the larger gate 33 is mounted on a pivot pin 35 to the left and below the said projection.

A pair of stops 36 and 31 are disposed below the said gates respectively in such manner as to limit the pivoting of said gates.

A balancing Weight 38 is pivotally secured to the outer end of the larger gate 33 below the flange 33a of said gate.

A pair of receptacles 39 and 40 respectively are placed below the gates, that on the left being so placed that genuine coins will drop therein, while that on the right is so disposed that all slugs or spurious coins are automatically received therein. A cover II is secured over the mechanism by bolts 42 and 42a through the said cover and in the bosses 43 and the apertures 44 respectively.

In operation, a small slug A entering the slot I2 moves down the passageway I4 in the upper coin guide II until it strikes the buffer Illa which causes the slug A to fall outward through the orifice I4 and downward into the slug receptacle 40.

A large slug B or a heavy slug C being larger in circumference than small slug A", passes the orifice I3 and in moving downward strikes the spring I'I, retarding its downward speed; slug B or C in passing through the aperture I6 beneath the projection I5 strikes the nuum gates 19 and 20, slug B being lighter in weight does not tip the gates enough to cause them to open fully, but the impact of the slug does cause the gates to open slightly, the weighted ends then return the gates to their original position which thus pushes the slug up and outward causing said slug to roll outward along the top surface of gate 20 and drop downward into slug re-- ceptacle 40; slug C being heavy, drops upon the gates l9 and 20 causing them to open, the slug C dropping through the open gates and into the coin guide 21 through the slotted aperture 28 in the top edge thereof, striking the spring 27a which thus retards the velocity of the slug; the slug C then drops through the aperture 30 beneath the projection 3| and on to the gates 32 and 33 causing them to open and drop the slug C into the slug receptacle 40.

A coin D follows the procedure of slug C except that it does not open the lower gates 32 and 33. but rolls outward along the top of gate 33 and drops within the coin receptacle 39.

Figs. 8 and 9 illustrate the operation of the upper gates l9 and 20 while Figs. 10 and 11 illustrate the operation of the lower gates 32 and 33.

Obviously the weight 25 is such that the gate 20 will not open under the weight of the light slug B and will eject the same, but will open and pass a heavy slug C or the proper coin D. Then the weight 38 is such that the gate 33 will open and eject a heavy slug but will not be opened by a coin D" and will therefore pass the same to the cash box 39. In short, small slugs A will be tilted out at the opening 13, light slugs will be thrown out at the upper gates; and heavy slugs at the lower gate. When the gates are closed they combine to form an inclined trackway leading from the outlet of the chute.

I claim:

1. The combination with a coin chute, of a pair of gates below the outlet therefrom, said gates swinging toward and from each other and the outlet, and being weighted to normally close with the ends of the gates in contact with each other, the pivot of one gate being located higher than that of the other gate, and the gates forming an inclined trackway from the outlet when they are in contact.

2. The combination with a coin chute, of upper and lower gates below the outlet therefrom, said gates swinging toward and from each other and being weighted to normally close with the end of the lower gate in contact with the end of the upper gate, whereby the latter forms a stop for the former, and producing an inclined trackway from the outlet when said ends are in contact.

THEODORE BIBICOS. 

